Google play music uses my data!?

[AC Question]

All the music I purchased from Google play is stored in the 'play music' app but the songs I BOUGHT I have to be connected to WiFi to listen to. How can I switch the music I bought to the sound player so I don't have to lose data by listening to music I paid for

 

[B. Diddy]

Welcome to Android Central! Have you actually downloaded your purchased music for offline listening? If you don't download it, then Google Play Music will simply attempt to stream the music from your cloud. https://support.google.com/googleplay/answer/1250232?hl=en